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20 October, 08:34

The length of a rectangle is three times it's width. If the area of the rectangle is 108ft^2, find its perimeter

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Answers (1)
  1. 20 October, 11:21
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    48 feet

    Step-by-step explanation:

    If W and L are the width and length, then:

    L = 3W

    WL = 108

    Substitute:

    W (3W) = 108

    3W² = 108

    W² = 36

    W = 6

    L = 18

    Therefore, the perimeter is:

    P = 2 (W + L)

    P = 2 (6 + 18)

    P = 48
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